Choose the product of –3y2(–4y3 + y – 9).
1 answer:
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Answer:
41.24cm²
Step-by-step explanation:
See attachment for the figure
First is to find area of rectangle
Given:
Length of rectangle 'l'= 3cm
breadth of rectangle 'b'= 3cm
Area of rectangle= l x b= 3 x 3=> 9cm²
Next is to find the area of the circle
Given:
radius 'r'= 4cm
Area of circle= πr² => π4² =>50.24cm²
Required:
area of the shaded region=?
area of the shaded region= area of the circle - area of the rectangle
area of the shaded region= 50.24 -9 =>41.24cm²
Therefore, area of the shaded region is 41.24cm²
Answer:
By multiplying both sides of the equation by we solve the equation.
Step-by-step explanation:
Given the equation:
in order to solve for x, we need to bring the unknown "x" to the numerator. Such is normally done by first finding the so called "Least common Denominator" (LCD), and using it to multiply both sides of the equal sign to get rid of all denominators in the equation. This is similar in a way to the procedure of cross multiplication.
Notice that the LCD in our case is simply the straight product of all factors in the denominators : 9 * x * 4 = 36 x
Then, in order to solve for the unknown "x" we need to isolate it on one side of the equal sign, so we need to divide both sides by the numerical factor 27 :
Therefore, if we want to make both operations we performed into a single process, what we actually did was multiply by 36 x and divide by 27:
so we can say that we can achieve the solving of the equation in one step by multiplying both sides of the equal sign by " " :